AU-517/717
1. SPCIFICA TlaNS
AU-717
Power output
Min. RMS, both channels driven, from 20 to 20 000 Hz, with no
more than 0.025% total harmonic distortion
85 watts per channel into 8. ohms
Load impedance. . . . . . . . . 8 ohms
Power bandwidth.
. . . . . . . . . . . .
20 to 20 000 Hz at or below
rated min. RMS power output
and total harmonic distortion
Total harmonic distortion (POWER AMP IN)
.....................
less than 0.025% at or below
rated min. RMS power output
Intermodulation distortion (70 Hz: 7 kHz = 4:1 SMPTE method)
'...........,.... lessthanO.025%
Frequency response (at 1watt) (POWER AMP IN)
..................,.. Oto200 OOOHz+OdB-3dB
RIAA curve daviation (PHONO) . . . . +0.2 dB - 2 dB
(20 to 20 000 Hz)
approximately 60 at 8 ohms
load
Damping factor.
. . . . . . . . .
Input sensitivity and impedance (1 kHz, for rated power output)
PHONO " " 2.5mV/47kilohms
(Max. input capability; 350 mV at 1 kHz, less than 0.01 % total
harmonic distortion)
AUX, TAPE. . . . . . . . .
. . . ..
150mV/47 kilohms
Output level (1 ,000 Hz)
TAPEREC(pinjack) " 150mV/47kilohms
PREOUT
...............
1V/47kilohms
Channel separation (1 kHz, at rated power output)
PHONO " betterthan60dB
AUX.................. betterthan65dB
Hum and noise (short-circuit, A-network)
PHONO .......... 78dB
AUX.............. 100dB
Controls
BASS.
. . . . . . . . .
Tone selector
TREBLE
...........
Toneselector...........
SUBSONIC FILTER.........
HIGHFILTER............
MUTING
. . . . . . . . . . . . . . .
LOUDNESS (-30dB) .,.
:!:10dB (50 Hz)
200 400 Hz
:!:10dB (15kHz)
, 6 kHz
3dB(16Hz), 6dB/oct
3dB (10kHz), 6dB/oct
20dB
9dB at 50Hz
7dBat10kHz
Power requirements
Powervoltage............. 100, 120 220 240V (50/60Hzl
120V (Usable 110 - 130V)
60 Hz (for U. A. & Canada
only)
Power consumption
Maximum consumption. .
. . . . .
Rated consumption
. . .
Dimentions................
Waight
. . . . . . . . . . . . . . . . . . .
735 watts
425 watts 500 VA
430mm (16-15/16") W
168 mm (6-5/8") H
389mm (15-3/8") D
8kg (39.2lbs) net
19.8 kg (43.7 Ibs) packed
2. BLOCK DIAGRAM
r----____n
:r:t: I
UUI
, 'I
--' a: I
-"'"""~~,, . ,"-"-,
0.. I
'" I
"" :~ ,~ ,~ ,
0.. ILn_____-
0 ~ ;;'1 ~
7'" , I ~
~ ~
t --------_
:_---------+ _
:i!!:i!!, -
$; ~'"" ~ ';;~~: , , ,"- "- ,-- --.,.
n_____------
_n_______n__-
,'j,- - - - - --';",
"'I
":"1
0..
""I
:: I
:51
,21
L______--
-- --- -----,,-------
IIA
JlI'-
Ii;;;
II,
JI'"
I:~
I:~
"(0
"'"
d ..:..
- - - - -- ---
JL______-
n__----_n
----------
ttJ~
r--------- ---------------------
---- -- -.. ~:
1'-'
"'I
..:..' u
0.. I ~
"" I
""
~I
"gl
=1
~I
L______- - ------------- -- - -- - -
- -----_
~r----(0 -(0 ------------- "C0 -(0"- - c0~---
~: g~
&ii&ii
.:.:
i'i~
~ ""
L__- -- - --
--- ---- --~ -~--~--_!_--_
AU-517/717
3. ADVANTAGE AND OPERATION OF
POWER AMPLIFIER CIRCUITRY SECTION
DOl
ZDOI
FETOl"
... '-'
ZDO2
1. Advantage
OThere is neccessity not to decrease the phase response till
DC range in order to increase the music signal response of
extremely low frequency range. Therefore, this amplifier is
employing no capacitors except ones for phase compensa-
tion, and has an almost perfect transient characteristics.
0 The first stage FET (2SK9?) is a dual FET of even characteris-
tics and has a large Gm and no-leakage current at normal
temparature.
To avoid the influence by temperature drift, such as center
voltage (OV) deviation, this FET is used as differential am-
plifier and operates at cross point which is the optimum
point of drain current (at about 3mA) against the tempera-
ture drift.
OTransistors, TROS and TRO?, the push- pull pre- driver stage
functions as current differential amplifier that the stabilized
operation can be obtained. In addition, the collector cur-
rent of these transistors is enough high to make linearity
excellent.
OSince this Amplifier employs phas~ advancer circuits (CO6
COB, C1S, R29, C16 and R30J, which have not been fre-
quently used, to compensate the phase characteristics on
high frequency range and is also made to have enough
4. ADJUSTMENTS
1. Driver Circuit Board Adjnstments
Note: 1.
STEP I
Master Volume....
........ ........
Minimum
RoomTemperature................
SUBJECT I EQUIPMENT I MEASURE OUTPUT I
current on each stage to increase the through-rate, the
performance on high frequency range is conspicuously
improved.
OTo avoid the voltage deviation, regulated power supply
circuit composed of ZDO1, ZDO2 is employed.
2. Operation
The use of differential amplification at first stage dual FET
(FETO1 , FETO2) and connection of the FET to the differential
amplifier composed of TRO1, TRO2, make possible to obtain
enough gain and remarkable low distortion.
The output signals of TRO1 and TRO2 are untiphase.
The output signal of TRO2 adds to TROS, on the other hand
the output phase of TRO1 is inverted by TRO3, then, it becomes
input signal of TRO4 and TRO? which are cascoded connection.
The output signals at TROS and TRO? are inphase that the op-
eration of this stage is push-pull drive and current differential
amplification. The power amplifier of the final stage is com-
posed ofSEPP (Single Ended Push-Pull) symmetry comple
mentary in 3-stage darlington connection type.
TRO9 and TR10 are composing current limiter circuit to protect
power transistor from break-down by overload.
(See the picture of top view on page
3. For adjustment, run the unit for more than 3 minutes after
the power is switched on.
ADJUST ADJUST FOR CONDITION
DCOV DC Volt Meter Speaker Terminal F-2721 DC OV:tSmV 0 Set VRO1 and VRO2 to center
L-CH VRO1, VRO2 position.
0 Then, for the purpose of pro-
DCOV Same as above Same as above F-2722 DC OV:tSmV ceeding the accurate adjust-
ment, set the voltage to 0 volt
VRO1, VRO2 by VRO1 first and VRO2 next.
Bias Current Same as above TP Terminal (+) (-) F-2721 DC 20mV:t1mV 0 By turning VRO3 counterclock-
of F-2721 VRO3 wise, the bias current is de-
creased gradually.
Bias Current Same as above TP Terminal (+) (-) F-2722 DC 20mV:t1mV
of F-2?~ VRO3
AU-517/717
5. OTHER PARTS
1. Top View'
(AU-517) Power Cord
(AU-717)
Speaker Terminal 8P Input Terminal
4P Input Terminal
R701, R702
CO701-CO703
C703
T70J
C701
C704
T702
C702
Power Cord
Speaker Terminal 8P Input Terminal
4P Input Terminal
CO701-CO703
C703
T701
C701
C704
T702
C702
R701, R702
Parts No.
Parts List ~AU-517/717?
Stock No.
Ground Terminal
TR703
TR701
VR02
VR01
VR03
VR01
VR02
VR03
TR702
TR704
round Terminal
TR703
TR701
TR702
TR704
Description Parts No. Stock No. Parts No. Stock No. Description
Description
ClO5
C707-714
R701,7O2
C0701-7O3 2450060
5066280
2290190
3800010
3800190
3800320
2300060
2300090
2410091
2410830
0659801
0602109
0202221
OlpF 150V M.
1.0pF 100V M.
2200 2W NH.
Voltage S.I.cto' SW EU. 85
Gm""d r.,ml"ol AU-717 Only
TRlOI,7O2 0305840-2
TRlO3,704 0300520-2
2411240
2230052
AU-517 OnlY
TR701.702 0306450-
TR703, 704 0300830-2 2SCI403AR,
2SA745A R, 0, Y r,o","'o, ClOt-704 0559520
T7OI,7O2 4002580
4002584
4002582
F70t 0432290
0434060
0435150
AC 0,11., XX
AC 0",., EU,
Sp.ok., r.,m;"ol
Pow., Co,d XX
Pow., Co,d EU
Pow., COld 85
Pow., F". Hold.,
Pow., F". Hold., EU. 85
Vollog. S.I.clOt Pl'g XX
Vol log. S.I.ctOl Sock.' XX
12000pF 63V E.
C701-704 0559518
T701.702 4002590
4002594
4002592
F7O1 0432270
0432500
0435140
Pow., r,o",10,m., XX
Pow., r,0",10,m., EU. 85
Pow., r,o",10,m., Ul. CSA
5A 125V
7A 125V ow., ".
5A Pow., F". EU, 85
2SCI116R,
2SA747 R, 0, Y r,o",I,'o'
15000pF 63V E.
Pow., r,o"do,m., XX
Pow., r,o",fo,m., EU. 85
Pow., r,o",fo,m., Ul. CSA
5A 125V
lOA 250V Pow., F".
15A Pow., F". EU.
2. Front View (AU-717)
AU-517/717
Parts List ~AU-517/717/
P."s No. Stock No.
15318850
1015170.
15318840
1015230.
15318840
1101780.
15318840
1190410
15318830
1190410
15326611
1171150
r326611
1171630
1171610
Descdpt;on
7 Type Koob
250kO (MN)x2 80'00" Vo"me
L=25 P=5
7 Type Koob
100'0 (C)x2 T,eb". 80", Vol,m,
L=25 P=7
7 Type Koob
'Olo,y Switch, Sp,ok",
7 Type Koob
'oto,y Switch. Top' Copy
7 Typa Koob
'otOty SwiJ,h. 'op" Sel,"ot
Le"t Switch Koob
L"" Switch, Tooe Del,ot
L"" Switch
Koob
La,et Switch. Pow"
L"e' SwiJd. Powat EU. 8S
. Figures
Connectors & Pin Ass
Connectors
Type A (3-10 pins) Type B (2-6 pins)
P.", No. Stock No. De,cdpt;on P.", No. Stock No. De,c';pt;on
(326620 P"h Switch Koob AU-717 Only
5286721 Koob G,ide !5326611 Le"t Switch Koob
1131400 P"h Switch.
Top, Ploy 11 71130 L"" SwiJd. Lo,do"
2430290 Haod Phooe Jock !532661 I L"" SwiJ,h
Koob
5006670 8000ot 1171130 L"" Switch. S,b,oo', Filt"
5336600 So",,, 80dge
15318860 7 Type Koob
0319110 light Emitt,d Dioda 1090280 150l0 x2 5kO x 2VoI,me L=25 P=9
5507070 Leg
15326611 Le'et SwiJd Koob
AU-S17 Only 1171120 Le", Switch.M,tiog
15326611 Le,et Switch Koob 15326611 Le"t Switd Koob
1171120 Le,et Switch, Lo,doe, 1171130 Le'at SwiJd, High Filtet
15326611
L"" SwiJd Koob
r326620
P"h Switch Koob
11 711 20 Le", Switch,S,b,ooic Filtet 5286721 Koob G,ide
15318860 7 Typa Koob 1131400 P"h SwiJch.
T"o 0",
1 090250 150,OX2Vol,meL=25P=7 7007570 Fto" Pooal A"y
7007580 FtC" Pooel A"y 5058730 80ttom Plote
5058740 80ttom Plote 0319110 Light Emitt,d Diode
Slock No.
2 p,ns 2420450
3 Pins 2420460
3 P'n~ED) 2420650
4 PInS 2420470
5 Pins 2420480
6 PInS 2420490
NOTE: Since stock number of Jamale connectors (type 61 with wires are not
shown in each parts list of Complete crrcUit board, please refer to the
above parts list when ordering the connector.
Abbreviations
Pin Ass
Type A (3-10 pins) TypeB(3-10 pins) Type C (3-10 pins)
Type D (2-6 pins) Type E (2-6 pins)
Ce.
: Carbon Resistor
: Solid Resistor
: Cement Resistor
: Metal Film
Resistor
: Fusing Resistor
: Non.lnflammable
Resistor
: Mylar Capacitor
C. : Electrolytic Capacitor
BP. : Bi. Polar Electrolytic
Capacitor
: Ceramic Capacitor
: Mica Capacitor
: Oil Capacitor
: Polystyrene Capacitor
: Tantalum Capacitor
Mi.
AU-517/717
6. PARTS LOCATION & PARTS LIST
Terminal Circuit Board (AU-517 Stock No. 7595201)
(AU-717 Stock No. 7595171)
Conductor Side
2 F-2723 ualizer Circuit Board (AU-517 Stock No. 7551171)
(AU-717 Stock No. 7551161)
Conductor Side
Since some of capacitors and resistors are
omitted from parts lists in this Service
Manual, refer to the common parts list for
capacitors & resistors which was appended
previously to each Sansui Manual.
Parts List
Parts No. Stock No. Description
2200480 8P lop"' Te.miool
Parts List
Parts No. Stock No. De.cr'ption Position
TRo"o, 0300900. 2SA906 (G. H) , B. 2 B
TROO. 0300470. 1 2SA726(w) (F. G) 1 A. 2 B
TR05. 0300900. 1 2SA906 (G. H) 1 B. 2 B
TROl. 0306290. 1 2SC140011) (E. T.oo,'sto. 1 B. 2 B
TRoo. 0300B90. 2SA750(3) (E. U) 1 A. 2A
TRll. 0306290. 2SC14001I) (E. 1 A. 2A
TRI3. 0306290. 2SCI4001I)IE. 1 A. 2A
TR15 0300890. 1 2SA750(3) (E. U) 1 A. 2A
DOI. 0340120 VO1212 ) 1 A. 2 B
Doo. 04 0340120 VO1212 Vo"sto. 1 A. 2A
Ports No. Stock No. Description Position Ports No. Stock No. Description Position
COI. 0602109 1.0pF 100V 1 C. R47. 0193820 82rJ
) ~
1 A. 2A
COl. 08 0620121 120PF 18. 2 B R49. 0193820 82rJ ,W 1 A. 2A
CI3. 0620151 150pF 50V 1 A' SOl 1190420 lop", Ro'o.y Switch 1 B. C
C15. 0625272 2700pF 1 A. 2A 502 1190410 Tope Copy Ro'o.y Switch 2 B. C
C23. 0625103 10000pF 1 A. 2A 2410920 3P Pio A,, y Type E
RI7. 0231561 '"0 1 A. 2A
RI9. 20 0231220 nrJ 1 A. 2A AU-7T7 Only
R23. 0231273 27krJ y,W 1 A. 2A 2410910 2PP'"A,, yTypeE
R33. 0231153 15krJ 1 A. 2A
R35. 0231304 300krJ 1 A.
3. F-2673 Tone Control Circuit Board (AU-517 Stock No. 7561841)
Conductor Side
AU-517/717
Parts List
Pa.ts No. Stock No. Dese.'ption posmon
TRol.02 0306010. I 2SCI222!2) (U. E) f lB. I A
TRO3. 0306010. 2SCI222!2)(U. E) lB. I A
TR05. 0300890. I 2SA750(31 (E. U) T,o""!o, 1 B. I A
TRoUB 0306010. 2SCI222(2) (U. E)
Dol. 02 0340120 VD1212 Vo';"o, 1 B. 2 B
COl.02 0610361 360pF 50V
C05. 060233B 33pF 100V
VROI 1015170. I 250kO(MN)x2 BoloooeVR2A
SOl 1171120 lood"" lem SwHoh 2A. B
S02 1171150 Toos Deleo! lew SwH,h 2 B
SO3 1171120 Sob'o,l, Fllte' l.,a, SwH,h 2 B
2410570 5P PI, A,, y Typa D
2410920 3PPI,A,, yTypaE
4. F-2674 Bass & Treble Volume Circuit Board (AU-517 Stock No. 7561861)
Parts List
5. F-2670 Pre-Main Switch Circuit Board (AU-517 Stock No. 7595211)
(AU-717 Stock No. 7595191)
6. F-2667 Ta e Pla Circuit Board (AU-517 Stock No. 7595181)
(AU-717 Stock No. 7595221)
Pa.ts No. Stock No. Dese"ption
VROI.02 1015230.1 IOOkO(C)x2 T,abla. Bo" Voloma
Parts List
Parts No. Stock No. Dese"ption
SOl 1110290
2200500 PRE-MAIN Sllda Sw'Ioh
4P I,po' !a,m',ol
Parts List
Pa.ts No. Stock No. Dese"ption
SOl 1131400
2410700
2410920
Topa P"h SwHoh
6P PI, A,, y Typa F
3P PI, A,, y Typa E
AU-517/717
7. F-2720 Tone Control Circuit Board (AU-717 Stock No. 7561941)
Conductor Side
, Parts List
Pacts No. Stock No. Desc'iption Position Pacts No. Stock No. Desc,iption Position Pa"s No. Stock No. Desc,iption Position
TRO1, 0360370-2 2SA798 (F, G, H) lB. 1 A DO1, 0340120 VD1212 Vo""o' 1 C. 1 A SOl 1171130 MO1log SW
TR03, 0300470, 2SA726M') (F, G) 1 C. 1 A Cor. 02 0620361 360pF 50V 2 B S02 1171130 lo,doe" SW 2 B
TRos, 06 0306290, 2SCI400(1) (E, U) I C. l A COS, 0602338 33pF 100WV S03 1171150 Tooe Deleot SW
TR07, 0300890, 2SA750(3) (E. U) T,o","'o, 1 C. 1 A C09, 0620121 120pF 50V lB. 1 A S04 1171130 S,b,oolk FII", SW
TR09, 030629D, 2SCI400(I) (E, U) 1 C. 1 A R37, Dl91820 820 ; \!4W 1 C. 1 B 505 1171130 High Fllte, SW 2 B
TRII, 03D6290, 1 2SCI4DO(1) (E,U) 1 C. 1 A R39, 0191820 820 4 1 C. l A 2410570 5P Plo A" y Type D
TR13, 14 0300890, I 2SA750(3) (E. U) 1 C. 1 A VRO1 1015170. 250kO(MN) X 2 8010ooe VR 2410920 3P Plo A"y Type E
8. F-2665 Bass & Treble Volume Circuit Board (AU-717 Stock No. 7561851)
Conductor Side Parts List
Pa,ts No. Stock No. Desc,iption
VROr.02 1015230,1 100kO(C)X2 T,eble, Bo"Vol,me
9. F-2666 Turn Over Switch Circuit Board (AU-717 Stock No. 7561871)
Conductor Side Parts List
Pa,ts No. Stock No. Desc,;ption
SO1 1131410 T010 am P"h
10. 21 Driver Circuit Board (AU-517 Stock No. 7571721)
(AU-717 Stock No. 7571741)
Conductor Side
11. F-2722 Driver Circuit Board R-ch (AU-517 Stock No. 7571731)
(AU-717 Stock No. 7571751)
Conductor Side
Pa,ts No. Stock No.
Parts List
AU-517/717
Posmon
0306290. 1 25CI400111(E. U)
0306290. 1 25C140011l(E. U)
0300690. 25A750(3) (E. U)
0300890. 1 25A750(3) (E. u)
0300791. 25A899 (6. V)
0305951. 2 25C945 (G. p) T'o,,;$lo'
0306401. 2 25C1904 (6. V)
0306401. 2 25C1904 (6. V)
0305951. 2 25C945 (G. P)
0300791. 2 25A699 (6. V)
0308441- 25D362 (M. l. K)
0303271. 2 256537 (M. l. K)
0370251. 2 25K97 fET
0311160
"""'
0311160 1 52473D
0311160 152473D mode
10311160
152473D
0311160 151566
0316170 EG6O1-
0316170 laM' D;oda
E 601.
TRol
TR02
TRo3
TR04
TRo5
TR06
TRo7
TRoa
TRoo
TRIl
TR12
TR13
fTor
Dol
D02
Do3
Do.
ZDol
ZD02
Cor
CO5
CO7
0620101
0620331
0669505
0202222
0231332
0231332
0103392
0202152
0210470
0210470
0103560
0103560
0103479
0103479
0135338
0135338
0202100
0132229
Ro.
Ros
Ro,
Roo
RJO
R28
R3I
R36
R37
R43
R44
R45
R46
R.7
lor 4210290
1033570
1035330
1035310
VROI
VR02
VRO3
AU-517 Only
R03 0107102
R16 0107223
R28 0210560
R31 0210560
AU-717 Only
RO3 0107122
R16 0107273
R22 0107103
R28 0210470
R31 0210470
Dasc"ptlon
100pf\
330pfl 50V P.
5pf 50V C.
2'0 2 W N.J.'.
3'0\ "
3'01 "W M.
9kO YzW
1.5'0 2W N.J.
470\ "
4701 "W N.J.'.
~~g
"W CR.
70 "
330\
3301 5 ~ Ca.
100 2W N.J.
20 2 W Ca.
I.5pH Co;!
1000(6) Vol,ma
2'0(6) Vol,ma
!k0(6) Vol,ma
"0\
22'01 "W .
560\ "
5601 "W N.J.'.
1.2'O
2nO y.,W CR.
10'0
470
470 .2W N.J.'.
(j I Ltlr G-e
1 A. 3 D
1 A. 3 D
1 A. 3 D
1 A. 3 D
1 A. 3 D
16.
1 A. 3 D
26.
1.26.3.4C
16.
26.
1 B. 3C
1 A. 3D
2A.
1 B. 3C
2 B. 4C
2A. 4 D
1 A, 3D
2A.
2A.
1 B. 3C
2A. 4 D
2A. 4 D
2A. 4 D
1 A. 3D
1 A. 3D
2A.
1 A. 3D
26.
1 B. 3C
2 B. 4 D
1 B. 3C
2 B. 4C
2 B. 4C
2A. 4c.D
2A.
2A. 4 D
1 A. 3D
1 A. 3D
2A.
1 A. 3D
lA. 3C.
2A.
1 A.
1 A.
1 A.B. 3C.
1 A.
2A. 4 D
1 A. 3D
AU-517/717
12. 2675 Power Supply & Protector Circuit Board (AU-517 Stock No. 7502331)
Conductor Side
Parts List
P.,ts No. Stock No. D.se"ptlon Position P.,ts No. Stock No. D.se"ptlon Position Pa"s No. Stock No. D.se"ptlon Position
TRoL02 0308.521, 2 2.5D438 (E, F) 1 B. 3 B D17-18 (0311160 152473D 2 B C603 0602338 33pF 100WV 2 B
TR03, 0303361, 2 25B560 (E, F) 1 B. 3 B 0311180 151588 ROL 02 0202272 7kO 1 A. 3A
TR6or 0305951, 2 25C945 (Q. P) 2 B (0311160 152473D 2 B R03. 0202272 7kO J.R.
DINO 1 A. 3A
TR602 0305951, 2 25C945 (Q, P) 2 B 0311180 151588 Res, 06 0210101 1000
t r;,W
2 B. 3 B
TR603 0305951, 2 25C945 (Q, P) T,a"I"ar D6or 0310350 10D2 (152227) 2 A R07, 0210101 1000 2 J.R. 1 B. 3 B
TR604 0300.510, 25A733 (P, Q) 2 B D602 0310350 10D2(152227) 2 A RI9. 0202100 100
TR605 0305951, 2 25C945 (Q, p) 2 B D603 0311160 152473D 2 B R6or 0202391 3900 2 W J.R. 2 B
TR606 0305951, 2 25C945 (Q, P) 2 B D604 0340120 VD1212 Vari"or 2 B R602 0202222 2kO 2 B
TR607 0305951, 2 25C945 (Q, P) 2 B D605 0311160 152473D 2 B R6I6 0210472 7k0 y,W J.R 2 B
DOL 02 0311530 30D2 I A. 3A D606 0311160
: ~~:~~~
Dlod. 2 B
D03, D607 0311160 2 B Rl601 r 150250
R.lay
0311530 30D2 D6O8 0310340 10Dl (152226) 1150370 R.lay
Des. 06 0311530 30D2 1 A. 3 A
D07. 0311.530 30D2 1 A. 3A ZDor, 0316570 RD33E (B) r 1 B. 3 B FOL 02 0435160 4A 12.5VPow., I". Ul, C5A 1 B. 3 B
D09, 0310350 10D2(152227) 1 B. 3 B ZD03. 0316570 RD33E (B) Z, r DI 1 B. 3 B 0432300 6A 125V AC f". XX
DII, 03103.50 1 OD2 (1 52227) 1 B. 3 B ZD601 0315760 EQAOI.06R .. 0 2 B 0435160 4A- AC I". EU.
DI3, 03103.50 1 OD2 (1 52227) 1 B. 3 B ZD602 0316390 RD6.2E (B) 2 B 2310220 F". Hold.r
D15, 0310350 1 OD2 (1
52227) Dlod. 3 B. 3 B COI-02 2310230 F". Hold.,
EU. B5
0655103 10000pF 500V 1 B. 3 B
AU-517/717
13. F-2663 Power Supply & Protector Circuit Board (AU-717 Stock No. 7502321)
Conductor Side
Parts List
Parts No. Stock No. Description Position P.rts No. Stock No. Description Po.ltlon P.rt. No. Stock No. D..crlptlon Po.ltlon
TROJ. 0308451. 250356 (0. E) 18. 3 B D13-14 (0311160 1524730 1 B. 1 A CO!.02 0655103 1O000Pf
1 500V
1 A.
TRo3. 0303281. 2 25B526 (0. E) 2 B 0311180 151588 Diode CO3. 0655103 10000pf 1 A.
TRo'. 0306270. 1 25C1708 (E, U) 1 B. 3 B DI5-16 10311160
1524730 lB. 1 C603 0602338 33pf 100WV 2 B
TRo7. 030071 O. I 25A847(I)(f. G) 0311180 151588 RO!.O2 0202332 3k0 1 2W 1 A.
TR09. 0306270. I 25CI708(f. 1 B. 3 B D"-18 10311160
1524730 1 B. 3 B RO3. 0202332 3kO N.I. 1 A.
TR11, 0300710, 2SA847 (f, G) 2 B 0311180 151588 Ro"" 0210101 1000 1 y,w 1 B. 3 B
TR601 0305951. 2 25C945 (Q, p) T,oO$lst.. 2 B D6o' 0310350 1002(152227) RI5, 0210101 1000 2 2 B
TR602 0305951. 2 25C945 (Q. P) D6o2 0310350 1002(152227) R37, 0202100 lOO
TR603 0305951, 25C945 (Q. P) D.o3 0311160 1524730 2 B R60' 0202391 3900 2 B
TR60. 0300510, 25A733 (P. D6o4 0340120 VO1212 Vodsto, 2 B R602 0202272 7kO 2 W I.R. 2 B
TR60' 0305951. 2 25C945 (Q. P) D6os 0311160 1524730
DIode
2 B R603 0202272 7kO 2 B
TR6" 0305951. 25C945 (Q. p) I B D606 , 0311160 1524730 2 B R6" 0210472 7kO y,W I.R.
TR607 0305951. 2 25C945 (Q, P) 1 B D607 0311160 1524730 2 B
Dol, 1 A. D6o' 0310340 1001 (152226) RL601 ("50250 R.loy
0311290 55.
Do3. 1 A. D609 0340120 VO1212 1150370 R.loy
0311300 55- VO1212 Vo",'o'
Do"06 0310350 1002(152227) 1 A. D6IO 0340120 Fo!.02 0432290 5A 125V Pow., fuse UL, C5A I A.
DOl. os 0310350 1002(152227) I A. ZDo!.02 0316310 RO-13E (B) 1 B. 3 B F01-0' 0432500 7A 125V AC Ius. XX 1 A.
Do,. 10 0310350 1002(152227) I A. ZD601 0315760 EQAOI.06R Z.n., Diode 0435170 5A. AC luso EU, B5
DI!.12 0310350 1002 (IS2227) 1 A. 3A ZD60' 0316390 RO. 2E (B) 1 A 2310220 fuse Hold., XX
2310230 fuse Holde, EU, B5
AU-517/717
7. SCHEMATIC DIAGRAM
7-1. AU-517 Power Supply Section
xx EU. BS Model Only : La D'esent;an et res sDec;ficat;ans sant suscept;b'es d' e mad;fiees sans p'eav;s Da' su;tes d'amel;a,at;ans eventuelles.
And",ungen, d'e dem technoschen Fa'tsch"" d,enen. ble'ben va'behalten
. Des;gn and spec;ficat;ans subject to change w;thaut nabce fa' ;mp'avement.
50/60H,
AC ;~~:;;g r"_,, 4'T
s""
xx Model Only EU. BS Model Only
7-2. AU-717 Power Supply Section
xx EU. BS Model Only
AC
;'::;,~;;
50/60Hz
PC",
rWHtTE-
F",
'OA -
IOO-;'OV
5A-220-240V is",.
F",
JSA-T
FOT-Q4
7A 72SV
AC 220, 240f'
50H, F,,_~ 5A-T
FOJ
xx Model Only EU. BS Model Only
NOTE:
AS to U. , c.S. , B.5., ES and XX marked in the Parts Lists, note the followings:
, c.S.A... . Approved parts used in the unit which is applicable to the U.5. and Canada under safety standard.
S. ......... . Approved parts used in the unit which is applicable to British under safety reguirement.
U. .. . . . . . . . . Approved parts used in the unit which is applicable to Sweeden, Denmark, Norway, Finland, West
Germany, and Switzerland under safety reguirement.
XX .......... Parts used in the unit which is applicable to other countries excepting mentioned above.
* In parts lists, parts with no above mark in of "Description" are all the same as XX marked parts.
AU-517/717 AU-517/717
7-3. AU-517
r-- 2
6691 I F-2~m-
-::,~==--.-- --- ~=---
2SCI2221E,UI 2SA750IE,U)
rREC
TAPE-
LPLAY
RIGHT CANNEL
PHONO
PHONO I'?
L__-
J,:
61 iJ:\:6
01!
-----
TR" 2SD438(E,
S"ector 2n3
Tape Copy 2?23
Tope pz"y 2667
Loudn"s 2673
Tone F-2673
Subsonic Filter F-2673
PRE -POWER F-2870
Speak""
Po...r
BROWN PT", PURPLE
3S.5V
s".- 1. phonO-2
1. hono-
3. wn"
4. au'
S".- tuner
2. off
3. source
50"2
50201
S"', 1. source
,.
"pe-7
SOT"~ 1. 5""""
2. '.pd
S"'. 1. off
2.
S".- 1. .,f",
2.
So,"", 1. off
2. 16Hz
S""b 1. CONNECTED
;:
g:;':;~o ":::::CED SEPARATED
5"".- 1. off
2.
3. 8
4. A+B
1. off
2.
eRAY
i:J
PURPLE
35.5V 05 Ii"
087"
PURPLE
3s.
eRAY 69,J
:::1'
PURPLE 104
3s.
PT",
AC ,ooV
SO/50Hz
JAPANMod,IO'IJ RED
S",
C", 0.
BROWN
SYM80L
CERAM'C
MYLAR
STYROL RED
ALL RES'STORS
!Ii WATTS
UNLESS OTHERW'SE
NOTED
*1. METAL FILM
RESISTOR
TOLERANCE
*2. NON FLAMABLE
RESISTOR
*3. FUSING
RESiSTOR
5-",
TROo.
CO 2SC9451P,
TR" 08 2SCI9041B,
2?21 TR"02 2SCI400lE,
TR03.
04 2SA750IE,
TR05. 2SA8991B,
TR" 2SD382IK,
TR" 2SB537IK,
FET"
2SK97
~ ~~~ "
c!i'" c!i
R,,22K
---
F-ir"ill" -
6751 ~2K
-;-- ;;-j '"
c,,
IO(2)
C"
5",.
R", 220(2)
J",
0 10 1010
+ - - +'---" '---"
Sysum A
LED",
28A733
28A750
230060
28C945
25C1222
25C1400
280438
FeB
28A726
28A847
2SA906
28C1708
258537
280382
B r
28A899
28C1904
28K97
1001
1002
VO1212
1824730
lAD 1
1801
i62E
1l3E
I =
3002
,!y
AU-517/717 ! AU-517/717
7-4. AU-717
F~720'
---
2~i7S0IE.V)23
illfI ~!::'!3 I
112iA906IF,G) "
TR",
LEFTCMANNEL 2SA726 IF,
I ~Dr212
~Cf400lE. TR" 2SA899IB.
TR" 2SC9451P,Q) TR"" 2SCI904IB.l.
TR" 2SC94~
R,d7We)
TR"." 2SCI400IE, TR""
"'3
,,
2SA750IE,
~ ~~ ~
TUNER
AUX
C"OO47 R" lo(2I
f---"""J3
R" '-2
Z0602
RD6.
SO"
146
PT,O7
LED", LEDT" LED", LED",
PRE-POWER H67D s"o. CONNECTED
g~~~gjT
g%U
;iu;,pE,jJ SEPARATED
off
A'S
olf
OnLy)
Sd"tor F-1723 SOk.'
ALL RESISTDRS
'"
WATTS
UNLESS
DTHERWISE
NOTED.
METALFILM
RESISTOR
TOLERANCE!/%
*2. NON FLAMABLE
RESISTOR
'3. FUSING
RESISTOR
BROWN
'!l
5"'0"
S"ako"
Top, Copy 2723 5",.
5",
Powa AC
7aoV
Sa/SOH,
JAPAN MODEL
ONLY)
ACI1DVSOH,
(ULCSANDOELDNLY) 5"'
70" Play 2667 507'
SOle,
5",,
5020, 2.
5",. I. dd"t
2.
504", I.,yff
2.
5"", I.ofl REO
C", am
Moting 2664
L"d"" F-2664
70n2 F-2664
Sobsoni, Filtor 2664
High Filta 2664
2SA733
2SA750
2SC945
2SC1222
2SC1400
FCB
2SA726
2SA847
2SA906
2SC1708
258526
250356
258537
250382
c:,u:
B r
2SA747
25Cl16
25A899
2SC1904
u I
fCf
2SK97
1001
1002
VO1212
1524730
EQAO1.06R
EQBO122
R06.2E
ROl3E
5S3
11 'f1
5S3R
vrru If~
8. OPERATION OF PROTECTOR CIRCUIT
This protector circuit contains two functions at abnormal
condition; a speaker protector circuit against DC voltage
appearing at output, and speaker protector circuit against
over-current.
e ?:'
R40 r620 4'/A
CID t 1'6. 27K
CID
'-c'
'-O
f?5 ',i r:s
"-
:jj +1 ~ ,
~~
11;:"' ~.
8;
(3) c::i :~
'"
Ii: '
;';5 c,
, ) 0-
," '"
cfi
OJ (5):h
a., n (Ji4
~ V,
i;;
: '"
- d
~ I SS
~~~2X2 ~
34137
A. Speaker Protection Circuit against DC
voltage appearing at output
1. When an abnormal negative voltage appears at output
TR601 turns off, TR602 turns on and TR603 turns off so that
the relay, RL601 , keeps off in order to protect loudspeakers
from break-down.
2. While the relay, RL601 , keeps OFF, zero voltage(center volt-
age) controlling TR607 through D607 will increase, resultly
the LED701 as protector indicator, starts flickering.
3. When abnormal positive voltage appears at output ~, the
voltage is supplied to TR602 directly, and the operation of
the protector circuit is same as above mentioned 1,
B. Speaker Protection Circuit against
abnormal over-current
1. At the moment when abnormal excessive current flows
into power transistors, a transistor (TR09) detecting ex-
cessive over-current, on power stage becomes ON.
2. Then, DC voltage at ~ decreases, resulfly TR604 turns on
and positive certain voltage appears at ~'
3. As mentioned above, when TR602 turns on, the relay, RL601
keeps OFF; a certain positive voltage at~' turns on TR60S
too, resultly collector voltage of TR60S decreases and its col-
lector voltage keeps a certain voltage at ~ simultaneously.
4. By keeping a certain DC voltage at ~., the LED701 as pro.
tector indicator continues flikering, even though all cir-
cuits work completely.
POWE R OUTPUT
0602
R06.
lR6Ob
'-?B
D05, 06. 13.
D603. 605, 606, 1i07
1524730
0.04 VOl212
ZD601 EQAOI 06R
AU-517/717
0:::
0:::
LE0701
a:::
ell
0:::
C. Operation of astable multivibrator
1. When control.(bias) voltage is not supplied to the base of
TR607 in abnormal condition, TR606 and TR607, on astable
multivibrator repeat turning (switching) on and off alter-
nately each other by charging and discharging of capacitors
C606 & C607, resultly, the LED701 as protector indicator
continues flikering.
2, When the relay, RL601 is turned on, base voltage of TR607
becomes zero volt through D607 and TR606 becomes ON
resultly LED701 as power indicator lights up.
-
1
-
2
-
3
-
4
-
5
-
6
-
7
-
8
-
9
-
10
-
11
-
12
-
13
-
14
-
15
-
16
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